Object detector and associated driving device for a medical diag

Details Object detector and associated driving device for a medical diag Object detector and associated driving device for a medical diag

1997-02-25

1999-03-16

Wong, Don

X-ray or gamma ray systems or devices

Electronic circuit

With switching means

378 94, H05G 154

Patent

active

058839356

ABSTRACT:
An apparatus for medical diagnosis and/or therapy which includes an electromagnetic proximity sensor (20-1, 20-2, 20-3, 20-4) which detects the presence of an object (for example, 28) directly in front of the sensor. By coupling the main drive directions 34-1, 34-2, 34-3 and 34-4 to the proximity sensors in such a manner that each main drive direction (for example, 34-4) substantially halves the exterior angle (.alpha..sub.4) between the two neighbouring proximity sensors (20-1, 20-4) and by inhibiting the displacement in the associated main drive direction (34-4) by these two neighbouring proximity sensors, it is achieved that all clearing movements remain possible and all movements leading to collisions are inhibited.

REFERENCES:
patent: 4969170 (1990-11-01), Kikuchi et al.
patent: 4987583 (1991-01-01), Travanty et al.
patent: 5097495 (1992-03-01), Gray et al.
patent: 5105455 (1992-04-01), Kato et al.
patent: 5485502 (1996-01-01), Hinton et al.

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